The object of the present invention is to provide a bolt that effectively prevents gouging, seizure and racing between the bolt and nut without the aid of a guide boss and is effective when combined with the case nut. The diagnosis means assesses hardware components and programming functions of the sound processor and accesses and assesses patient data stored in the sound processor. When one of the access points detects the presence of the mobile unit, it sends a signal to the network indicating the location of the mobile unit and the information requested by the mobile unit. They can be efficiently transfected with retroviruses and lentivirus and genetically manipulated.